code: def testAddErrorCode(self):
      try:
          errcode = MPI.Add_error_code(MPI.ERR_OTHER)
      except NotImplementedError:
          self.skipTest("mpi-add_error_code")
      try:
          MPI.Remove_error_code(errcode)
      except NotImplementedError:
          pass
  
file_path: mpi4py/test/test_errorcode.py
imports: from mpi4py import MPI
  import mpiunittest
label_desc: Use image node_id 5 for calling the TestErrorCode obj's underlying member method code with example usage: obj.testAddErrorCode() without return types